Raphael and Cayena are not related at all. Cayena and Rezef's mother had an affair with Raphael's dad and made Rezef but Cayena is a product of the emperor and the mother. Raphael is from the duke and duchess, the ones that are related are Cayena-Rezef and Raphael-Rezef.... LOL hope that made sense I'm not good at explaining
Yes so I was thinking they are (fl, ml) closely related in the family though not by blood but they both share the same brother and let's say the empress and the Duke(Raphael's father) got together with their children that means fl and ml are I think, apparently, step siblings no? even if they weren't blood related they have still close relationship in the family and can be consider as step siblings with just their parents.
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BECAUSE CAYENA AND REZEF IS STEP SIBLINGS, AND ALSO REZEF AND DUKE RAPHAEL ARE ALSO HALF BROTHERS, THIS MEANS THEN THAT CAYENA AND RAPHAEL ARE STEP SIBLINGS, RIGHT???